Comparing: T1E6 vs. Tetrarch vs. T-26

Experimental vehicles T1E4 through T1E6 were heavily influenced by the British Vickers E. The first prototype was manufactured by the Cunningham corporation in 1931. After trials in 1932, an upgraded variant was built. However, a different experimental tank, the T2, was preferred.

Developed in 1936 by the Vickers-Armstrong company, with a total of 177 vehicles in two basic modifications the Tetrarch Mk I and the Tetrarch Mk ICS manufactured from 1941 through 1942. In 1942 twenty vehicles were delivered to the U.S.S.R. under Lend-Lease, of which 19 fought on the Eastern Front until October 1943.

Produced in greater numbers than any other tank of the Red Army during the pre-war period, with 11,218 vehicles in four main modifications built from 1931 through 1941.